Set the alarm clock for 5:23 pm

 

Leave this tab open — the alarm only rings while the tab stays open.

The alarm goes off in: ::
 
 

5:23 pm across the country

London5:23 pm
Birmingham5:23 pm
Manchester5:23 pm
Glasgow5:23 pm
Belfast5:23 pm

Times are worked out live in your browser, so daylight saving is already accounted for.

How to use the online alarm clock

Finish the final checks before leaving to hand the keys to the letting agent, with the alarm set for 5:23 pm as your firm stopping point. That leaves a useful margin before 6:00 pm for gathering any loose belongings, checking each room and making sure the keys and paperwork are together rather than rushing back through the property.

The key handover could easily be missed if the alert plays through headphones that are lying nearby or still connected inside a bag. Before relying on the alarm, check where your phone or computer is sending its sound, then choose a volume you can hear while moving between rooms. Keep this page active and prevent the phone or computer from sleeping: otherwise the alarm may not sound, leaving the keys with you when the agent expects them.

Your departure time matters because late-afternoon roads can change quickly as school traffic and the evening commute begin. Check the route before 5:23 pm and allow a little extra journey time for busy junctions, roadworks or finding somewhere legal to stop near the property office. Put your coat, documents and keys beside the door so the alarm means leave, rather than start looking for things.

Common questions

Will it still be right when the clocks change?

Yes. It reads your device's local clock, so the move between GMT and BST at the end of March and October is picked up automatically, as long as the computer's date, time and time zone are set correctly.

Can I use this on a phone?

It works in a mobile browser, but phones lock the screen and suspend background tabs far more readily than a laptop does, which can stop the alarm sounding. For anything important, a desktop or a plugged-in laptop is the steadier option.

Does the alarm still work if I close the tab?

No. Everything runs inside this page, so closing the tab — or quitting the browser altogether — ends the countdown there and then. Leaving it open in the background is all it asks, and switching to another tab makes no difference.

What happens if my laptop goes to sleep before 5:23 pm?

The tab sleeps along with it and the alarm will not sound on time, if at all. If you are relying on it, change the power settings so the machine stays awake, or keep a phone alarm running as well.